. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 307 HH. Elytra with rows of stilT hairs.— Epilrix. GG. Thorax without a transverse impression near base; elytral punctures confused.— Systena. FF. Antennae lo-jointed; hind tarsi inserted on the outer side of tibiae above the apex; elytral punc- tures in rows.—Psylliodes. Striped Cucumber Beetle (Diabrotica vittata Fab.).—(Consult Cir. 31, Bur. of Ent., U. S. Dep. Agr.,
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 307 HH. Elytra with rows of stilT hairs.— Epilrix. GG. Thorax without a transverse impression near base; elytral punctures confused.— Systena. FF. Antennae lo-jointed; hind tarsi inserted on the outer side of tibiae above the apex; elytral punc- tures in rows.—Psylliodes. Striped Cucumber Beetle (Diabrotica vittata Fab.).—(Consult Cir. 31, Bur. of Ent., U. S. Dep. Agr., 1909.) A native pest, destructive to squash, melon and cucumber, especially in early spring, both in adult and larval stages. Well distributed. Known also as the " Melon-bug " and''Striped Bug" (Fig. 200).. a. ' ^ h Fig. 200.—Striped cucumber beetle (Diabrotica vittata): a, beetle; b, larva; c, pupa; d, egg; e, sculpture of same; a, b, c, much enlarged; d, more enlarged; e, highly magnified. {After Chittenden.) Adult.—A yellow beetle ^^ inch long, with a black stripe on each side of each wing-cover; head black; under surface mostly black. Hibernates. Eggs.—One-fortieth inch long, lemon to orange in color, oval; laid singly or in groups in the soil about the roots. Hatch in 9-10 days. Larva.—A slender white worm-like grub with head, thoracic and anal plates dark brown; lives in the soil, feeding on or in the roots, and matures in about a month. Pupa.—Formed in an earthen cell 2-3 inches below surface; 3^^ inch long; whitish; duration 1-2 weeks. Life-history.—VvohdJCily two broods a year. The adults hibernate under rubbish, etc., but appear again in April or May. They attack. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lochhead, William, 1864-. Philadelphia, Blakiston
Size: 1867px × 1338px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
